Grain-pan screen.



D. AMBLER.

GRAIN PAN SCREEN.

APPLICATION man MAR. 17. I916.

Patented Apr. 24,1917.

DAvID AMBLER, or IRMA, ALBERTA, CANADA.

GRAIN-PAN SCREEN.

Specification of Letters Patent.

Patented A r. 24, 1917.

Application fi led March 17, 1916, Serial No. 84,948.

To all whom it may concern: v a p Be it known that 1, DAVID AMBLER, a sub ject of the King of Great Britain, and resident of Irma, in the Province of Alberta,

Dominion of Canada, have invented certain new and useful Improvements 1n Grain-Pan Screens, of which the following is a descripj shaftj28, or by any other suitable mechation.

This invention relates to improvements in grain separators, and particularly applies to the grain pans thereof, and the objects of the invention are to facilitate in separating the tame from the wild grain and also the poorer from the better class of grain, to effectively remove the chaff, to simplify the construction ofthe mechanism and generally to adapt the several parts to better per form the functions required of them.

With the above objects inview the invention consists essentially of the improved construction' particularly described and set forth in the following specification and accompanying drawing forming part of the same. I In the drawing,

The figure is a perspective view of the interior of a grain separator embodying the present invention.

Referring to the drawing A represents a 2 grain separator comprising the casing 10, housing a cylinder 11 at the front end thereof and provided with a plurality'ofincllned decks 12 arranged in stepped relation and extending rearwardly from the cylinder to the back of machine, the several parts enumerated being of any usual construction well known in the art it is deemed unnecessary to further describe the same.

Located below the cylinder is a shoe 13 carrying a grain pan screen 14 provided with a plurality of orifices 15 therethrough, while below the said screen is a plate 17 operatively mounted on the shoe 13 and inclined toward the rear end of themachine, forming with the screen 14 a substantially acute angle.

The space between the-screen "14 and the plate 17 is closed by a door 18 slidably mounted adjacent to the rear of the shoe which supports a spout 19 'extendingtransversel across the machine adjacentto the said oor so that the wild grain is deliveredfrom the plate 17 thereto, and'thence to the side of the machine where it'may be conveniently bagged. A plurality of sieves 20 are mounted at the rear end of the madirectly over onto the tame grain is delivered chine, and operatively connected to the shoe 13, and the tame grain after passing over the screen 14 is delivered to the said sieves.

The shoe l3 and the sieves 20 are oscillated in any convenient manner such as by the links 25 and 26 operatively connected tothe crank 27 on theend of the crank grain separasaid above is subject to an oscillating mo-' tion.

The grain travels toward the rear of the screen-14 and the wild grain falls through the orifices 15 and is delivered to the plate 17, located there below, from whence it is dis charged into'the spout 19, the tame grain passing over the sieves 20 and being thoroughly cleaned from chafl' by the action of the fan 21 which chaff and other roughage is delivered to the spout 22, while the good grain is delivered to the spout 23.

In cleaning flax the door 18 is closed and as the threshed flax passes over the screen 14, the wild and the tame grain will pass through the orifices 15 and fill the space bewill then permit of the threshed flax, including the wild and tame grain passing the sieves 20, and the wild gram there coming under the influence of the fan 21 is delivered to the spout 22 while to the spout 23 from which it is discharged and bagged.

By utilizing the door 18, it will be clear that the screen 14, may be caused to perform the function of a solid plate so that it is quite unnecessary to change this screen when flax is being threshed.

' That portion of the flax which lodges between the screen 14 and the plate 17 is effectively cleaned out by opening the door 18, when the said grain will be delivered to the spout and then discharged to the side of the machine.

I As many changes could be made in the above construction and many apparently widely different embodiments of my invention constructed, within the scope of the claims,:without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawing shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention is:

1. A grain pan screen comprising a shoe, an angularly disposed grain screen operatively mounted in the said shoe, a plate carried by the shoe located below the screen and forming therewith a substantially acute angle, means for closing the space between the said screen and plate and separating sieves adapted to receive the grain from said screen.

2. A grain pan comprising a grain screen, a shoe operatively supporting the said Copies of this patent may be obtained for screen, a plate carried by the shoe located below the said screen and forming a substantially acute angle therewith, a sliding door at the rear end of the shoe inclosing the space between the screen and the said plate, and a transversely extending spout adjacent to the said door.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

DAVID AMBLER.

Witnesses:

OLAF LARSON, EDWARD THOMAS MCDOWELL.

Washington, D. 0." 

